Mitsubishi Electric SUH-2.5VR User Manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ···········································2
2. COMBINATION OF INDOOR OUTDOOR UNITS·····2
3. PART NAMES AND FUNCTIONS·····························3
4. SPECIFICATIONS ·····················································4
5. DATA··········································································7
6. OUTLINES AND DIMENSIONS ······························10
7. WIRING DIAGRAM ·················································13
8. REFRIGERANT SYSTEM DIAGRAM ···························19
9. TROUBLESHOOTING ············································28
10. DISASSEMBLY PROCEDURE ·······························32
11. PARTS LIST ····························································48
No. OC282
REVISED EDITION-B
OUTDOOR UNIT
Outdoor unit
[Model names] [Service Ref.]
SUH-1VR SUH-1VR.TH
SUH-1.6VR SUH-1.6VR.TH
SUH-1.6VR2 SUH-1.6VR2.TH
SUH-2VR SUH-2VR.TH SUH-2VR
1
.TH SUH-2VR
2
.TH
SUH-2.5VR SUH-2.5VR.TH
SU-1.6NR SU-1.6NR.TH
SU-2NR SU-2NR.TH
SU-2.5NR SU-2.5NR.TH
SU-1VR SU-1VR.TH SU-1VR.TH-T
SU-1.6VR SU-1.6VR.TH SU-1.6VR.TH-T
SU-1.6VR2 SU-1.6VR2.TH SU-1.6VR2.TH-T
SU-2VR SU-2VR.TH SU-2VR.TH-T
SU-2VR
1
.TH SU-2VR
1
.TH-T
SU-2.5VR SU-2.5VR.TH SU-2.5VR.TH-T
• SU-1VR.TH-T, SU-1.6VR2.TH-T and SU-2VR1.TH-T
has been added.
• Instruction of troubleshooting has been added to
pege 29 ans 30.
• Please void OC282 REVISED EDITION-A.
OC282-A--1.qxp 03.1.28 4:29 PM Page 1

Mitsubishi Electric SUH-2.5VR Specifications

General

Cooling Capacity	2.5 kW
Heating Capacity	3.2 kW
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Noise Level (Outdoor Unit)	48 dB(A)

Summary

Technical Overview

Technical Changes

Details modifications in Revised Edition-A, including heat exchanger, restrictor valve, and capillary tube.

Unit Compatibility

Chart showing compatible indoor and outdoor units for various system types.

Unit Components and Specifications

Part Names and Functions

Identifies and describes the purpose of key outdoor unit components.

Unit Specifications

Technical data for outdoor units: electrical, physical, performance, and airflow.

Performance Data and Installation Guidelines

Noise Criterion Curves

Graphs of octave band sound pressure levels for different outdoor unit models.

Outlines and Dimensions

Physical dimensions and installation clearances for outdoor units.

Piping and Refrigerant Charge

Guidelines for maximum piping length, height difference, and additional refrigerant charging.

Evacuation Procedures

Step-by-step instructions for performing system evacuation before operation.

System Diagrams and Troubleshooting

Wiring Diagrams

Electrical schematics detailing component connections for outdoor units.

Refrigerant System Diagrams

Visual representation of refrigerant flow and component layout within the outdoor unit.

Troubleshooting - PC Board and Thermistor

Identifies test points, thermistor data, and diagnostic criteria for key components.

Troubleshooting - Diagnostic Flowcharts

Flowcharts for diagnosing issues with deicer PC board, fan motor, and compressor.

Troubleshooting - Component Criteria

Criteria for checking compressor and fan motor resistance to identify faults.

Maintenance and Parts

Disassembly Procedures

Instructions for safely removing and replacing outdoor unit components.

Parts List

Illustrated list of structural components with part numbers and quantities.